Thank you for this instructable!I see people having compatibility problems with their adapters (mainly those using SD cards) so here are the components I used (from AliExpress):-This CF to SD adapter https://www.aliexpress.com/item/Hot-sale-WiFi-SD-... (7.28$)-This CF to 50 pin 1.8 inch hard drive adapter https://www.aliexpress.com/item/New-CF-Compact-Fl... (3.98$) You just have to cut the small plastic edge on the right (really easy) and ignore the first pins on the left (see the "Pin 1" indication)-->Total = 11.26 $ including shippingThis worked with my white 20Gb 4th Gen iPod (model No: A1099) and a 32Gb micro SD card formated in FAT32 (you'll need a micro SD to SD adapter). Pro Tip: Use a guitar pick to open the iPod.